Question

A flywheel gains a speed of 540 r.p.m. in 6 sec. Its angular acceleration will be:

• A. 3p rad/sec2
• B. 9 p rad/sec2
• C. 18 p rad/sec2
• D. 54p rad/sec2

Answer 1

Answer: (A)

3p rad/sec2

Answer 2

$\alpha = \frac{\omega}{t} = \frac{2\pi n}{t} = \frac{2\pi\left( \frac{540}{60} \right)}{6} = 3\pi rad ⥂ / ⥂ s^{2}$